function switchTab(tabindex) {
	if (tabindex==0) {document.getElementById("tab0").className="header_link_1" } else {document.getElementById("tab0").className="header_link_2"};
	if (tabindex==1) {document.getElementById("tab1").className="header_link_1" } else {document.getElementById("tab1").className="header_link_2"};
	if (tabindex==2) {document.getElementById("tab2").className="header_link_1" } else {document.getElementById("tab2").className="header_link_2"};
	if (tabindex==3) {document.getElementById("tab3").className="header_link_1" } else {document.getElementById("tab3").className="header_link_2"};
	//if (tabindex==4) {document.getElementById("tab4").className="header_link_1" } else {document.getElementById("tab4").className="header_link_2"};	
}
function SetCwinHeight(){
var bobo=document.getElementById("MainContent"); //iframe id
if (document.getElementById){if (bobo && !window.opera){if (bobo.contentDocument && bobo.contentDocument.body.offsetHeight){
bobo.height = bobo.contentDocument.body.offsetHeight;
}else if(bobo.Document && bobo.Document.body.scrollHeight){
bobo.height = bobo.Document.body.scrollHeight;}}}}